Big AL’s Services

Big Al's Services is a trusted heating and cooling contractor based in Plaistow, New Hampshire, proudly serving Southern NH since 2017. We are committed to keeping homes and businesses comfortable, safe, and energy-efficient throughout every season. Our service areas include Atkinson, Salem, Hampstead, Newton, Windham, Derry, Londonderry, and the surrounding communities.

We specialize in professional boiler installation and repair, oil-fired heating systems, central air conditioning, and Mitsubishi ductless mini-split systems. Whether you need a new heating system, dependable air conditioning installation, routine maintenance, or fast emergency repairs, our experienced team is ready to help. We focus on reliable workmanship, personalized solutions, and quality service tailored to your property's needs.

As a certified Mitsubishi Diamond Dealer, Big Al's Services meets high standards for Mitsubishi heating and cooling system installation and service. This certification also provides access to extended warranty benefits on qualifying systems, giving customers added confidence and peace of mind.

We understand how important reliable heating and cooling are in New Hampshire's changing climate. That's why we prioritize responsive service, professional expertise, and customer satisfaction on every job. From restoring heat during the coldest winter nights to improving indoor comfort during the summer, we are here when you need us most.

Big Al's Services offers 24/7 emergency service to help keep your home or business comfortable year-round. Contact us today for dependable heating and cooling solutions in Southern New Hampshire.